On Mon, Jan 17, 2022 at 02:59:15PM -0000, Artur Frenszek-Iwicki wrote: > I tried compiling colobot with the new gcc, expecting it to break in some > new and fascinating way, and got the following error: > > In function 'std::char_traits<char>::copy(char*, char const*, unsigned long)', > inlined from 'std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_S_copy(char*, char const*, unsigned long)' at /usr/include/c++/12/bits/basic_string.h:423:21, > inlined from 'std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_S_copy(char*, char const*, unsigned long)' at /usr/include/c++/12/bits/basic_string.h:418:7, > inlined from 'std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_replace(unsigned long, unsigned long, char const*, unsigned long)' at /usr/include/c++/12/bits/basic_string.tcc:532:22, > inlined from 'std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::assign(char const*)' at /usr/include/c++/12/bits/basic_string.h:1645:19, > inlined from 'std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator=(char const*)' at /usr/include/c++/12/bits/basic_string.h:813:28, > inlined from 'Ui::CList::SetItemName(int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' at /builddir/build/BUILD/colobot-colobot-gold-0.2.0-alpha/src/ui/controls/list.cpp:664:28: > /usr/include/c++/12/bits/char_traits.h:431:56: error: 'memcpy' accessing 9223372036854775810 or more bytes at offsets -4611686018427387902 and [-4611686018427387903, 4611686018427387904] may overlap up to 9223372036854775813 bytes at offset -3 [-Werror=restrict] > 431 | return static_cast<char_type*>(__builtin_memcpy(__s1, __s2, __n)); > | ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~ > > The relevant bit of code is this line: > m_items[i].text = " "; > Where the ".text" struct member is an std::string. > > Any suggestions on how to fix this will be appreciated. Please send me preprocessed source + g++ command line, provided the warning is reproduceable without -flto. Jakub _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
